I use this oid to gather mac address: .1.3.6.1.2.1.17.4.3.1.1This has worked on all of our cisco switches (3560,SG300, etc...). When an SG300-20 was updated to 1.2.7.76 the oid no longer exist.snmpwalk -c public -v 2c switch .1.3.6.1.2.1.17.4.3.1.1is...